Window-sash.



W. S. HAMM.

WINDOW SASH. APPLICATION FILED SEP'1'.7,1911.

Patented June 11 co.. WASHINGTON D c sawnn OFFICE.

WILLIAM S. HAMM, OF HUBBARD WOODS, ILLINOIS, ASSIGNOR TO THEADAMS & WESTLAKE COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

WINDOW-SASH.

Application filed September 7, 1911.

b all whom it may concern:

Be it known that I, VILLIAM S. HAMM, a citizen of the United States, and resident of Hubbard WVoods, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Window-Sash, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to means for securing the pane in an angular sash without the use of screws or nails, and particularly to devices such as are disclosed in the copending application of Alfred II. Newpher Serial No. 644,957,. As proposed by Mr. Newpher the pane is secured to its seat by means of metallic strips, U-shaped in crossse'ction, seated upon longitudinal ribs formed along the inner edges of the sash bars, adjacent strips meeting at the angle of the sash, the joints being so formed as to provide longitudinal and lateral pressure of the one strip against the other. In devices of this character if the windows are large there is a tendency of the retaining strips to bow outwardly, particularly in the case of the one applied to the top rail.

The object of the present invention is to provide means for overcoming this disadvantage, such means consisting in forming the strips, or some of them, normally in bowed form so that in applying them to the sash their ends must be sprung into place.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a face view of the sash, the pane-retaining strips being shown in process of application; Fig. 2 is a side elevation of one of the retaining strips; Fig. 3 is a detail sect-ion on the line 33 of Fig. 1; Fig. 4 is a detail in perspective of portions of adjacent retaining strips, showing a modified form of joint; and Fig. 5 is a detail of one corner of the sash in perspective, showing the parts illustrated in Fig. i in the process of assembling.

The window frame is shown at 10, and as being formed of sheet metal and having an instanding rib 11, which constitutes a seat for the pane 12. The sash frame is also provided with a continuous instanding rib 13, spaced apart from the rib 11, and upon the rib 13 there are seated U-shaped strips 14, 15, 16 and 17, for retaining the Specification of Letters Patent.

Patented June 11, 1912.

Serial No. 648,195.

pane in place. These strips abut against each other at the corners of the sash, either with the niitered joint, as shown in Fig. 1, or with the rabbeted form of joint, as shown at 18 in Fig. 5.

One of the strips, as 17, which may be called the key strip, has its inner leaf shortened, as represented at 19, for the purpose of bearing against the bowed portion of the adjacent strip 16. As thus far described the device is not of my invention, but forms the subject of the said copending application filed by Alfred H. Newpher. lVhen applied to large windows retaining strips of this kind, which are not held in place either by screws or nails, have a tendency to bow outwardly intermediate of their ends, this being particularly true of the strip, as 14:, applied to the top rail of the sash, the bowing in this instance being due to the weight of the strip itself. In order to prevent this objectionable bowing, I propose to so form the strips that they are retained trated in Fig. 2, the inner edge of the strip being concave from end to end. hen the strips are applied to the sash they are straightened by pressure, and when all are fitted to their places they have the efiect of each forcibly holding the adjacent strips to their seats upon the sash rail. The retaining strips being formed of spring metal, there is, of course, a constant tendency for them to resume the bowed form, and inasmuch as their ends are securely held there results an outward pressure throughout the entire length of each, which prevents the objectionable outward bowing or sagging.

I claim as my invention 1. In a window, in combination, a sash having rails provided with seats for a panel, panel retaining strips seated on the inner edges of the rails, the ends of adjacent strips having abutting engagement, such strips be ing normally outwardly bowed.

2. In a window sash, in combination, an angular frame having a pane seat and an instanding rib spaced apart from the seat, pane-retaining strips fitted upon the rib at the several sides of the frame, the ends of contiguous strips meeting as mitered joints, the inner portion of the end of one of the strips being cut away to conform to the side face of the adjacent strip, and one of such elastic material and being normally bowed strips being normally bowed outward. outward.

3. In an angular sash frame, ane-retain- 4 ing strips fitted to the inner t aces of the WVILLIAM HAMM' 5 sash rails and locked in place by their Witnesses:

mitered engagement at the angles of the LOUIS K. GILLsoN, sash, one of such strips being formed of G. L. WALTERS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

